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Water taken up through the bark is detected in the transpiration stream in intact upper‐canopy branches

hal.structure.identifierCentre for Ecological Research and Applied Forestries = Centre de Recerca Ecologica i Aplicacions Forestals [CREAF]
dc.contributor.authorGIMENO, Teresa
hal.structure.identifierDepartment of Forest Ecology and Management
dc.contributor.authorSTANGL, Zsofia
hal.structure.identifierUniversitat de Barcelona [UB]
dc.contributor.authorBARBETA, Adrià
hal.structure.identifierSwedish University of Agricultural Sciences = Sveriges lantbruksuniversitet [SLU]
dc.contributor.authorSAAVEDRA, Noelia
hal.structure.identifierInteractions Sol Plante Atmosphère [UMR ISPA]
dc.contributor.authorWINGATE, Lisa
hal.structure.identifierInteractions Sol Plante Atmosphère [UMR ISPA]
dc.contributor.authorDEVERT, Nicolas
hal.structure.identifierSwedish University of Agricultural Sciences = Sveriges lantbruksuniversitet [SLU]
dc.contributor.authorMARSHALL, John
dc.date.accessioned2024-04-08T11:46:24Z
dc.date.available2024-04-08T11:46:24Z
dc.date.issued2022
dc.identifier.issn0140-7791
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/195227
dc.description.abstractEnAlternative water uptake pathways through leaves and bark complement water supply with interception, fog or dew. Bark water-uptake contributes to embolism-repair, as demonstrated in cut branches. We tested whether bark water-uptake could also contribute to supplement xylem-water for transpiration. We applied bandages injected with H-2-enriched water on intact upper-canopy branches of Pinus sylvestris and Fagus sylvatica in a boreal and in a temperate forest, in summer and winter, and monitored transpiration and online isotopic composition (delta H-2 and delta O-18) of water vapour, before sampling for analyses of delta H-2 and delta O-18 in tissue waters. Xylem, bark and leaf waters from segments downstream from the bandages were H-2-enriched whereas delta O-18 was similar to controls. Transpiration was positively correlated with H-2-enrichment. Isotopic compositions of transpiration and xylem water allowed us to calculate isotopic exchange through the bark via vapour exchange, which was negligible in comparison to estimated bark water-uptake, suggesting that water-uptake occurred via liquid phase. Results were consistent across species, forests and seasons, indicating that bark water-uptake may be more ubiquitous than previously considered. We suggest that water taken up through the bark could be incorporated into the transpiration stream, which could imply that sap-flow measurements underestimate transpiration when bark is wet.
dc.language.isoen
dc.publisherWiley
dc.subject.enbark
dc.subject.endeuterium
dc.subject.endrought
dc.subject.enEuropean beech
dc.subject.enfrost
dc.subject.enhydrogen
dc.subject.enoxygen
dc.subject.enScots pine
dc.subject.enwater stable isotopes
dc.subject.enxylem
dc.title.enWater taken up through the bark is detected in the transpiration stream in intact upper‐canopy branches
dc.typeArticle de revue
dc.identifier.doi10.1111/pce.14415
dc.subject.halSciences de l'environnement
bordeaux.journalPlant, Cell and Environment
bordeaux.hal.laboratoriesInteractions Soil Plant Atmosphere (ISPA) - UMR 1391*
bordeaux.institutionBordeaux Sciences Agro
bordeaux.institutionINRAE
bordeaux.peerReviewedoui
hal.identifierhal-03778282
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-03778282v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Plant,%20Cell%20and%20Environment&rft.date=2022&rft.eissn=0140-7791&rft.issn=0140-7791&rft.au=GIMENO,%20Teresa&STANGL,%20Zsofia&BARBETA,%20Adri%C3%A0&SAAVEDRA,%20Noelia&WINGATE,%20Lisa&rft.genre=article


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